A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

What is more useful when it is broken?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Which number should replace the question mark?

What jumps when it walks and sits when it stands?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

What is the next number in this series?

4,12,84,3612....